Improved channeling-tool



UNITED 'rares ATENT FFICE@ ALBERT BOTTUM, OF BRIDGEPOBT, CONNECTICUT.

IMPROVED CHANNELING-TOOL.

T0 all whom it may concern.:

Be it known that I, ALBERT Bor'rUM, of Bridgeport, in the county of Fairfield and State of Connecticut, have invented a new and useful Improvement in ChannelingCutters for cutting channels in the soles of boots and shoes and other articles 5 and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawings, forming a part of this specification, in which- Figure 1 is a front View of my improved cutters. Fig. 2 is a top View of the same. Fig. 3 is a front view of the cutters and a transverse section of a shoesole, illustrating the operation of my invention. Fig. 4 is a transverse section ofthe sole, showing the form of the channel and representing it open on one side and closed'on the other.

Similar letters of reference indicate corresponding parts in the several figures.

This invention consists in the combination of a straight cutter and an arc-formed cutter, so arranged relatively to each other that While the first cuts a score in the sole or other article the other cuts from within the said vscore a strip whose transverse section is of semicircular or segmental form, thus producing a semicircular or segment-shaped covered channel.

To enable others skilled in the art to make and use my invention, I will proceed to de scribe its construction and operation.

A is the straight cutter-that is to say, it has a straight or ilat face like a knife-blade, which causes it to produce a straight cut, though its cutting-edged is curved and brought to a point, as shown in Fig. 2. B is the arc-formed cutter* that is to say, its edge is curvedin such direction as to produce an arcformed cut. These cutters are firmly secured together by a screw, C, passing through one and screwing into the other, or by other suitable means, in such man I ner that the rst one ext-ends across the arc of the second one in the form of a cord to said arc, as is illustrated by Fig. 1, and are to be so arranged in a cutting-machine or otherwise that while the first one cuts an oblique score, b, in the sole D or other article, the second one cuts from Within the said score the semicircular or segment-shaped strip c, (shown in the transverse section, Fig. 3,) so that when the said strip is removed it leaves the semicircular or segment-shaped channel d shown in Fig. 4.

This combination of cutters, While it cuts without choking, and much more freely and easily than the combination of a straight cutter and a ringshaped tubular one, cuts a channel of the most desirable form for the soles or" boots and shoes, and which, though it presents a wide opening for the reception of the sewing when thelap e left above the score b is turned back, as shown at the right-hand side of Fig. 4:, leaves no ridge over the sewing when the lap e is closed, as shown at the lefthand side ofthe same figure.

The straight cutter is represented as arranged in front of the curved one. The arrangement might be reversed; but I consider that represented to be the best, as it affords greater facility for turning the corners of the soles, more especially those of square-toed boots and shoes.

What I claim as my invention, and desire to secure by Letters Patent, is-

The combination of the straight cutter A and the arc-formed cutter B, for cutting a score and a channel within it of the form substantially as herein specied.

ALBERT BOTTUM.

Witnesses DAVID MEEKER, EDEN SUMMERs. 

